Table 5-1. Troubleshooting Procedures - TM-5-6350-264-14-P-20020

TM 5-6350-264-14&P-2

NAVELEX EE181-AA-OMI-030/E121 RT1161 M9443

T.O. 31S9-2FSS9-1-2

NOTE

Troubleshooting procedures listed in table 5-1 may require more than one person to perform corrective

action.

Covers should be removed as necessary to perform troubleshooting procedures.

Never disconnect a wire without first marking that wire to assure proper reconnection.

Table 5-1. Troubleshooting Procedures

Trouble

Probable cause

Corrective action

1. Constant

a. Low voltage to

Set multimeter to dc volts. Connect

alarm

Processor.

positive meter lead to TB1-7 and

negative lead to TB1-8.

If voltage is below tolerance, discon-

nect wires from TB1-7 and 8 and

measure voltage on these wires.

(1) If voltage on wires is below toler-

ance, refer to TM 5-6350-264-

14/10 & P on J-SIIDS Control

Unit.

(2) If voltage at Control Unit is good,

check wires for open circuits and

shorts-to-ground per instructions

in TM 5-6350-264-14/1.

If voltage on wires is good, replace PC

board.

(1) To remove Processor PC board,

tag and disconnect wires from

TB1 and TB2. Remove screws.

Remove PC board.

(2) To install new PC board, orient

are adjacent to conduit entrance

holes. Secure the PC board to

the chassis with screws. Con-

nect wires to TB1 and TB2.

5-4